How many moles of Cu are in 1.48 × 1025 Cu atoms?

24.6 mol Cu

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

MolesAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

[Given] 1.48 × 10²⁵ atoms Cu

[Solve] moles Cu

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[DA] Set up:                                                                                                     [DA] Divide [Cancel out units]:                                                                      

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

24.5766 mol Cu ≈ 24.6 mol Cu

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

What does that mean you dum bum